25% percent 10/40 is also 1/4 simplified. 1/4 as a fraction is 25%, 25 times 4 equals 100.
<u>OR</u>
Use 1/4, but divide 1 by 4(fraction is also division) You get 0.25 Turn this into a percent by moving the decimal point to the right 2 times. The answer is 25%